CROWNBLOCKS

CROWNBLOCKS UPET

CROWNBLOCKS

The workload from
30 tf ( 300kN ) 33 tons
Workload up to
225tf ( 225kN ) 248 tons
Number of sheaves
from 4 to 6
(depending on hook load)
Drill line diameter
from 18 (0.7 ") to 28.6 ( 1 - 1/8" )
Sheaves diameter
560 mm ( 22" )
762 mm ( 30" ), 914 mm ( 36" )
SAND SHEAVE OPTIONAL
Sheave diameter
530 mm ( 21" )
Drill line diamete
14 - 16
REQUEST INFORMATION
Sheaves set
Bearings set

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REQUEST INFORMATION

The crownblock is the fixed part of the crownblock – traveling block mechanism, mounted on top of the mast, and connecting the drawworks and the travelling block via the drill line, putting the entire workload onto the mast structure. It consists of a number of sheaves that rotate freely on the shaft by means of bearings. The central sheaves block has an inclination to the axis of the rig which allows to keep the travelling block in a position parallel to the mast uprights.

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